All broadcast eyes are on NBC News where a new boss takes over in an era of expected big changes, the New York Post reports.

Amid sagging ratings for the left-leaning MSNBC, where a shake-up is already afoot, to a reporting scandal involving suspended anchor Brian Williams, new NBC chief Andrew Lack inherits a network in disarray, the Post's Page Six notes of his first day on the job Monday.

Sources told Page Six that MSNBC President Phil Griffin and NBC News President Deborah Turness could be in trouble under Lack's new order, where one said he is expected "to clean house." Others report a good relationship between those news managers and Lack, the Post said, noting spokespersons for both declined to comment.

The network has seen a bright spot emerge as Lester Holt took over the anchor desk for the embattled Williams. But ratings worries continue for the morning flagship show, "Today," as well as at the Sunday talk news program, "Meet the Press," the Post reported.

Lack returns to a different NBC than the one he helmed from 1993 to 2001, but maintains relationships with the networks stars, including Matt Lauer and also Williams, said The Hollywood Reporter of his longstanding connections.

"Many at NBC News expect Lack to make rehabilitating Williams a top priority, though it's unclear what that would look like," the Reporter wrote of his expected early priorities.

It noted "two narratives" for Lack: a forward-looking stabilizer who knows how to manage his workforce and an executive who largely comes from a past era who could struggle under a new business landscape there.

"He's very intelligent, very articulate, very charming and very well-connected," one former colleague told the Reporter of Lack. "He makes you feel like, 'OK, this guy has the answers.' And he's certainly a seasoned handler of talent."

NBC announced the return of Lack in early March, The New York Times reported. He takes over for Pat Fili-Krushel, who moves to another corporate role with the network, the Times said.

One media observer expects Lack's return is a "short-term fix" for the network.

"You bring in a seasoned veteran to stabilize the ship, and that is what Andy Lack is," Mark Feldstein, a journalism professor at the University of Maryland, told the Times.

"They realize that the problem was deeper than just one anchor monster. I wouldn’t expect revolutionary change from Lack. This is probably a short-term fix."